package cn.com.ajava.util;

import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;

import javax.imageio.ImageIO;

import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGImageEncoder;

public final class ImageUtil
{
	public ImageUtil()
	{
	}

	/** */
	/**
	 * 把图片印刷到图片上
	 * 
	 * @param pressImg
	 *            -- 水印文件
	 * @param targetImg
	 *            -- 目标文件
	 * @param x
	 *            --x坐标
	 * @param y
	 *            --y坐标
	 * @param alpha
	 *            --透明度
	 */
	public final static void pressImage(String pressImg, String targetImg, int x, int y, float alpha)
	{
		try
		{
			// 目标文件
			float Alpha = alpha;
			File _file = new File(targetImg);
			Image src = ImageIO.read(_file);
			int wideth = src.getWidth(null);
			int height = src.getHeight(null);
			BufferedImage image = new BufferedImage(wideth, height, BufferedImage.TYPE_INT_RGB);
			Graphics2D g = image.createGraphics();
			g.drawImage(src, 0, 0, wideth, height, null);
			// 水印文件
			File _filebiao = new File(pressImg);
			Image src_biao = ImageIO.read(_filebiao);
			int wideth_biao = src_biao.getWidth(null);
			int height_biao = src_biao.getHeight(null);
			g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, Alpha));
			g.drawImage(src_biao, (wideth - wideth_biao) / 2, (height - height_biao) / 2, wideth_biao, height_biao, null);
			// 水印文件结束
			g.dispose();
			FileOutputStream out = new FileOutputStream(targetImg);
			JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
			encoder.encode(image);
			out.close();
		} catch (Exception e)
		{
			e.printStackTrace();
		}
	}

	/** */
	/**
	 * 打印文字水印图片
	 * 
	 * @param pressText
	 *            --文字
	 * @param targetImg
	 *            -- 目标图片
	 * @param fontName
	 *            -- 字体名
	 * @param fontStyle
	 *            -- 字体样式
	 * @param color
	 *            -- 字体颜色
	 * @param fontSize
	 *            -- 字体大小
	 * @param x
	 *            -- 偏移量
	 * @param y
	 */
	public static void pressText(String pressText, String targetImg, String fontName, int fontStyle, int color, int fontSize, int x, int y, float alpha)
	{
		try
		{
			float Alpha = alpha;
			File _file = new File(targetImg);
			Image src = ImageIO.read(_file);
			int wideth = src.getWidth(null);
			int height = src.getHeight(null);
			BufferedImage image = new BufferedImage(wideth, height, BufferedImage.TYPE_INT_RGB);
			Graphics2D g = image.createGraphics();
			g.drawImage(src, 0, 0, wideth, height, null);
			g.setColor(Color.PINK);
			g.setFont(new Font(fontName, fontStyle, fontSize));
			g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, Alpha));
			g.drawString(pressText, wideth - fontSize - x, height - fontSize / 2 - y);
			g.dispose();
			FileOutputStream out = new FileOutputStream(targetImg);
			JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
			encoder.encode(image);
			out.close();
		} catch (Exception e)
		{
			System.out.println(e);
		}
	}

	public static void main(String[] args)
	{
		// pressImage("F://test//1.jpg", "F://test/2.jpg", 300, 400, 0.7f);
		pressText("http://dreamslink.iteye.com/", "F://test/22.jpg", "隶书", 100, 36, 36, 600, 15, 0.6f);
		System.out.print("添加成功");
	}
}
